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Filtration effect of endothelial fenestrations on chylomicron transport in neonatal rat liver sinusoids

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Summary

The function of endothelial fenestrations in the control of the passage of chylomicrons from the blood to the liver parenchymal cells was studied ultrastructurally in neonatal rats. Measurement of circulating chylomicrons and endothelial fenestrations as well as chylomicrons in the space of Disse at 2–20 h after the onset of suckling revealed a substantial filtration effect of endothelial fenestrations on chylomicrons larger than 250 nm in diameter. Direct uptake of chylomicrons by parenchymal cells was observed to occur by pinocytosis; Kupffer cells endocytosed only very few chylomicrons, and endothelial cells were inactive in this respect.

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Authors and Affiliations

  1. Department of Pathology, Fukushima Medical College, Sugitsuma-cho, Fukushima, Japan

    M. Naito &  E. Wisse

  2. Laboratory for Electron Microscopy, Rijnsburgerweg 10, Leiden, The Netherlands

    E. Wisse

Authors
  1. M. Naito
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  2. E. Wisse
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Naito, M., Wisse, E. Filtration effect of endothelial fenestrations on chylomicron transport in neonatal rat liver sinusoids. Cell Tissue Res. 190, 371–382 (1978). https://doi.org/10.1007/BF00219553

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